sg-gst-calculator-mcp

Tools (4)

• calculate_gst

  Calculate Singapore GST amount. Computes GST on a given amount, either adding GST (exclusive) or extracting GST from a GST-inclusive amount. Current rate: 9% since January 2024. Returns base amount, GST amount, and total amount. Use this tool when you need to calculate GST for invoicing, pricing, or expense analysis in Singapore.

• check_gst_registration

  Check if a business must register for Singapore GST based on taxable turnover. Tests both retrospective (past 12 months > $1M) and prospective (next 12 months expected > $1M) thresholds. Returns registration requirement, penalty information, and voluntary registration options. Use this tool when advising businesses on GST registration obligations.

• get_gst_rates

  Get current and historical Singapore GST rates, including zero-rated and exempt supply categories. Optionally look up the applicable GST rate for a specific date. Historical rates: 3% (1994), 4% (2003), 5% (2004), 7% (2007), 8% (2023), 9% (2024+). Use this tool when you need GST rate information for compliance, historical analysis, or understanding supply classifications.

• calculate_reverse_charge

  Calculate reverse charge GST on imported services from overseas suppliers. Under Singapore's reverse charge mechanism, GST-registered businesses must account for GST on imported B2B services. Returns GST payable, input tax claim eligibility, and net cost. Use this tool when a business imports services from overseas and needs to determine GST obligations.